Electric signaling apparatus and circuits.



P. B. HBRZOG DEOD.

H. HERZOG, EXEUUTRIX.

ELECTRIC SIGNALING APPARATUS AND CIRCUITS.

APPLICATION FILED TEB.10,1902.

gg gg f a lPatented Mar. 16, 1915 2 SHEBTS SHEET 1.

W .fiave t. I HL'iiZJUG, BEST).

E. HERZOG, EXEHUTRIX. PLEUTRIC SIGNAUNG APPARATUS AND GIPPUTTS. APPLICATION FILED 1115.10, 1902.

Patented Mar. 16, P315.

Tn sTATns PATENT Trio.

FELIX BENEDICT HERZOQ OF NEW YORK,'N. Y.; HENRIETTA I-IERZOG EXECUTRIX 01" SAID FELIX ,BIIFJNIFLJIDIC'I HERZOG, DECEASED.

ELECTRIC SIGNALING APPARATUS AND CIRCUITS.

Specification of Letters Patent.

Patented Mar.16, 1915.

Original application filed August 15, 1890, Serial No. 361,048. Divided and this application filed February 10, 1902. Serial Ila-93,2855;

. 1' i1 (ill whom it in try concern.

Be it known that I, FELIX BENEDICT Hun- ;zoo, Ph. D., a citizen of the United States, and a resident of the city, county, and State of New York, have invented a new and useful Improvement in Electric Signaling Apparatus and Circuits, of which the following is a specification.

This is a division or continuation of a pending case S. N. 361,048 tiled on Aug. 15, 1390, since patented on Feb. 11, 1902 as (393,014, and is to be considered as related to two other applications 9. No. 93,2844,- and S. No. 93,98i'il filed on even date herewith as (to-divisions oi the same original case.

The improvements herein set forth are of general utility in the arts, although they hare special reference to a system of communicating or signaling in which one or a plurality of transmitters more or less automatically operated are connected with a receiving apparatus at one or more distant stations.

This invention relates more particularly to the transmitter oi a signaling apparatus, and has for its object the facilitating oi the operation of such transmitters, the increasing of the capacity thereof so as to send more than one signal to make a permanent record of the signals transmitted, and to also identify and leave a record at the. transmitting station of the operator who signals from that station.

'lh .terring to the drawings,Figure 1 is a front view oi one embodiment oi the invention, Fig.9 a front view oi another embodiment, showing also novel arrangement oi? circuits which have utility with other transmitters; Fig. 3 a detail of the form shown in Fig. 1; Fig. 4 a detail oi the form shown in Fig. 2; Fig. 5 is another embodiineut and Fig. 6 is still another embodi- :nent; Figs. 7. 8 and 9 are details. Fig. 10 is a diagrammatic side elevation. illustrating a receiving instrument which may be used with my transmitters.

Referring more particularly to the drawings, the form of transmitter shown in Fig. 1 comprises the usual break wheel A with a spring brush N bearing thereon, and adapted thereby to break up a continuous current into a series of impulses, which being transmitted to line acts to operate a receiving instrument at a distant station in any suitable manner. This type of break wheel is fully described in several of my previous patents; for instance #289,834, 315,783, 560,212 and (328,464, and need not be more particularly described than to say that it is driven by any suitable motor, such as spring 3 shown, and carries a large disk A on which are mounted a plurality of push-buttons D, as shown. The ratchet R is. also fixed to the break wheel A, the periphery of which is shown through the broken-away portion'of the disk A", and this ratchet is adapted to drive through spring-pressed pawl 12 a largcpinion 12 of a clock train. This clock train may be of any suitable construction as shown in several of my previous patents referred to, in which the gear 12 meshes with small gear 12 of escape wheel 12. The speed of the escape Wheel is controlled by oscillating: verge or escapement pawl 6, carrying weighted pendulum arm 6. In setting the device shown in Fig. 1 ready for operation, the disk A and break wheel A are turned clockwise to Wind up the spring 3, attached at its outer end to the frame of the instrument and at its inner end to the shaft of the break wheel, pawl 12 riding over the ratchet teeth R in the usual way. After being set the device is prevented from running down immediately by any suitable lock on the clock train, in the present embodiment comprising arm 13 adapted to engage with-lug 13' on escape wheel 12. The arm 13 is carried by arma- 'ture 13 of magnet J and is withdrawn from lug 13 when said magnet attracts its armaturc to the position shown in Fig. 1. The

clock train is so geared to the break wheel A that escape wheel 12 makes one complete revolution for every new contact on break wheel A passing beneath brush N. The push-buttons D upon'disk A are vformed as shown in Fig. 3, in which a stem 1) extends through a guiding socket P and a perforation in said disk A". The socket I has upper and lower stops 15* and 15 in stepped relation upon its shell, as shown in Fig. 3, and the stem D of the push-button D carries a cross-pin O, one end of which is adapted to engage these stops 15 and 15 for holding the button D in lower and upper position, respectively. A coil spring 15 surrounding'stem D tends to rotate said stem when the button D is depressed. When button D is in its lower position, one end of pin is in -a plane to engage armature pawl 8 fixed to armature 13, and the other end of pin 0 as shown in Fig. 1, is adapted to engage dog 9 pivoted to the frame and having a rear tail22 pressed against a stop 22 by spring 10.

.This transmitter is of the usual latent type as described in my previous patents, and the circuit for controlling the same may be of-the usual type therein described in which a closure is made at the distant station to energize the magnet J and thus allow the transmitter to operate and give its sig nal. For the purpose of disclosing the transmitter construction this circuit need not be shown further than the entering line 91 leading to the magnet, and thence by insulated connections 91 to the brush N. The toothed contacts of the break wheel A of course are grounded to the frame of the machine, so that the current passing thereto from the brush N. is led away by return wire 92.

A receiving instrument may be used with my transmitter such as that illustrated in Fig. 10. Such a receiving instrument may comprise an eleetro-magnet a which, when energized by an impulse, attracts the armature a so that the pivoted pawl a will retate the ratchet a through one tooth space. After each impulse passes the armature a drops down by gravity so that the pawl 01 engages the next lowest tooth preparatory to giving'the ratchet wheel the next rota-- tion. The ratchet wheel is provided with a detent pawl a".

The operation of the device shown in Fi g. 1 is as follows: The apparatus is wound up for operation by turning the disk A and brake wheel A to the right to put tension on spring 3, which turning permits pawl 12 to ride over the ratchet in the usual manner, holding the spring 3 in its wound up position. The teeth of the ratchet R are arranged so as to stop the break wheel A with one of its contact teeth beneath brush N for keeping this part of the circuit closed. Since the circuit is normally broken at the distant station, magnet J is not energized and therefore arm 13 is in position to stop the clock train from running down. Assuming now that the operator wishes to set this transmitter for sending several difierent signals, he depresses several different buttons upon the disk A corresponding to the signals which he wishes to send. Assuming then that the operator at the distant station is ready to receive the signal from this transmitter shown in Fig. 1, he closes the circuit at that distant station in the way indicated in the patents above referred to, thereby energizing the magnet J, releasing the clockwork and allowing disk A and break-wheel A to turn anti-clockwise. During this rotation the break wheel A passing beneath brush N sends impulses to line, and this will continue until one of the depressed buttons D comes to the position shown by button D", at which time the pin 0 engages pawl 8 and stops the rotation of the disk A and break wheel A. It will be noted that the contacts on break wheel A. correspond in number to the buttons D, and that when any button such as D' engages pawl 8, a live contact of break wheel A lies beneath brush N so as to continue the circuit. This continuation of the circuit being transmitted to line instead of the usual interruption, may be translated by any suitable apparatus at the receiving end of the line into the proper signal showing which button was depressed. Moreover, the closure of this cireuit caused by stopping the break wheel at this point continues until broken at some other place in the line, either manually by the operator at the receiving station, or automatically in somev suchway as shown in my Patent #573,592. When, however, the circuit is broken at some other place in the line, the magnet J releases pawl 8 and allows the disk A to continue its rotation. Upon this movement the pin 0 of the depressed button D is engaged by the dog9 and swung cireumferentially against the force of its spring 15 so as to be raised against its upper stop 15 Fig. 3, whereby the button is restored. The rotation of the disk A? will thus continue until all of the depressed buttons D have given their signal and have been restored. In this manner the instrument may be set any one time for transmitting several ditl'erent signals over the line in the same operation.

In the embodiment shown in Fig. 2 of the drawings, I have shown a modified form of transmitter in connection with a. novel circuit arrangement. The instrument of this modification comprises as before, a break wheel A having contact teeth for sending impulses to line, said break wheel being fixed to its ratchet 2 and adapted to drive in one direction a disk 20 through a spring pressed pawl 12. The break wheel is turned by means of any suitable motor such as coil .spring 3 as shown, and-is provided withhandle L for being turned to wind up said spring. The pawl 12 on disk 20 of course holds the break wheel in its wound up position and although this disk 20 is adapted to turn, nevertheless its rotation under driving force of ratchet 2 is regulated and controlled by a suitable clock work and escapement not herein shown but which may be of the usual form such as described in connection with Fig. 1 or in any of my previous patents above referred to. Surroiuiding the rotary disk 20 and spaced from its periphery is mounted a stationary ring 201 which ring carries a number of push buttons D formed at their lower ends like a punch (not shown). A record strip of paper or the like 17 is guided over roller 16 around the periphery of rotating disk 20 and out by roller 18, said paper strip lying between disk 20 and its surrounding ring 201 and adapted to be fed in a continuous manner by said disk 20. Buttons D are provided with the usual coil springs 15 and act to punch holes in the perforated strip 17, in a manner well understood, at regular intervals around the periphery of disk 20 so that asignal or signals will be transmitted as hereinafter described, and also provide a permanent record in the strip 17 of the signal which was transmitted. In addition to the button punches D I have also provided in this instrument means for punching a second row of perforations in the strip 17 as shown in Fig. 4, which means may be either a second row of punches similar to D or as shown, a swinging punching device comprising punch 55 carried on arm 56 which is pivoted to the shaft of the break wheel. It is understood that the circular ring 201 is formed with perforations (not shown) around its periphery, suitably indicated for signals, which allow punching device 55 to pass therethrough for punching a second row of perforations in strip 17. The magnet J, a portion of which is shown at the lower part of said figure, performs the same function as the magnet in Fig. 1, namely that of holding the clock train connected with the break wheel A from operating until said magnet is energized. The rotation of the break-wheel is preferably effected by means of a spring-motor comprising a spring 3 and including an escapementwvheel 2 which is driven through speed up gearing including a gear-wheel t. The escapement-wheel t cooperates with the verge t and carries a stop t" near .its edge. The gearing is proportioned so thatthe SCQ1')H1Ont-Wlll makes one revolution. to correspond with each metallic transmitting segment or strip of the break-wheel. The wire 92 which leads to the brush N has a branch connection passing through the coil of magnet J and passing from there the conductor 53 leads to the contact fingers 53 and 54. lVlien the current is not passing through the coil of magnet J, the spring it holds the armature it" away from the magnet so that there is no obstruction in the-path of the stop 25" carried on the cscapement-wheel t. Mounted in any suitable manner upon the stationary frame and insulated therefrom are spring contact feelers 53 and 54 which as shown may extend through the ring 2 1 so as to bear against the tape or strip 17. These feelers and 5-! are adapted to detect the presence of perforations in the strip 17 and by means of circuit connections here- ,tions in the strip 17.

inafter described, affect the circuit at a dis tant station. Detector 533 of courm-s operates through one row of perforations and detector 5| through the other row of pcrfora- The circuit connections in this modification are also suitable for other forms of transmitters than the one here shown. and it is understood that one or more transmitters such as (31 may be connected in line. The transmitters 61 ,are preferably similar to each other and are wired in multiple arrangement as indicated in Fig. 2 in which one of the instruments is shown on a small scale and the other on a large scale.

Whenever the instrument is set by turning handle L and ratchet 2 and break wheel A clockwise, the pawl 12 will hold said ratchet 2 with a contact tooth beneath brush N in the usual manner for making a closed circuit. This circuit is closed through magnet J, line 92, spring jack 67, annunciator drop 67', bell 7'2, battery 90, line 91, branch 91' to the frame 19 to which break wheel A is grounded. The current from batteryv mitter ready for transmission. The operator at the distant station when it suits his convenience inserts plug 80 into the jack 7 which, in the usual manner, introduces into the line battery 89 which is of suiiicient strength to operate magnet J. The spring jack 80 may be of any suitable construction such as described in some of my previous patents referred to, so that when introduced into the jack 6'? it will close circuit to bat tery S9 and cut out the circuit through 90. The magnet 5 being thus energized through the second circuit from battery 89 releases the clock work in the usual way and break wheel A starts rotating to send impulses to line and in its rotation carries disk 20 and record tape 17. The record tape thus brings its perforations beneath feeling detectors and 54: and the device is so arranged that whenever a perforation of this tape arrives beneath detector for instance, an insulating block of break wheel A arrives beneath the brush N which would normally break the circuit. The detector 53 in this instance is a current carrying member so as to establish a short circuit around the break wheel by means of branch 53", detector 53, disk 20 and out by 91 as before. In this manner the circuit instead of being broken in regular setuience is kept closed, but this continuous current does not advance the receiving instrument at the receiving station. The finger cooperates with another finger or detector 54: which is controlled by a second row of perforations in strip 17 to also establish a second time, a short circuit around break wheel A. The current normally passes by the conductor 92 -tovthe brush N and when the brealcwheel is in the proper position the current passes through the break-wheel and through the frame 19 of the instrument, then by con ductors 91 and 91 to the line-wires 91 and 91 which lead through the instruments 83 and 83 and back to the battery 89. The break-wheel operates as an impulse creating device and each impulse advances the pointers of the receiving instruments 83 and 83. W hen one of-the perforations in the tape 1.7 comes under one of the fingers 53 or M, the break-wheel is short-circuited and the current instead of passing to the brush N then passes through the coil magnet J and through the finger ri or-54 to the frame. From the frame the current passes as before through both receiving instruments, but this current is nowa continuous current and not impulsive, so that it does not advance the pointers of these instruments. Furthermore, the energizing of magnet J attracts its armature t overcoming the force of spring and pulls the armature into the position indicated in Fig. 2 in dotted lines. This brings the end of the armature into the path of the stop i on the escapement wheel I, and stops the rotation of the break-wheel. The operator at the central station then opens the circuit through either one of the instruments 83, 83, so that that signal maintains its pointer in the position where it is left. I In this way the first signal remains indicated on one of the instruments. The perforation in the tape is arranged so that when the finger comes in contact with the wheel 20, the brush ,N will be in contact with one of the insulating sections in the break-wheel. hen the operator opens the circuit through wire 92, the armature t is released and the motor starts. The impulses which are produced in the line by the break-wheel now advance only one of the receiving instruments, namely that receiving instrument which has. been left in closed circuit. lVhen the complete signal has been transmitted, the other of the fingers 53 or 54 may coiiperate with the perforation in the tape 17 and short-circuit the break-wheel as before. A separate receiving instrument such as 83' may be placed in this circuit so as to indicate any of the signals intended to be given by the second row of perforations. Since any suitable device may be arranged to close the shunt circuit through 91" when the finger 54 drops into a perforation o't-the strip 17. the particular details of such a device are not herein shown. At each impulse the receiving instrument shown in Fi 10 is advanced through one tooth space.

n order to prevent the currents in the different transmitters 61" from interfering with each other, the magnets for these different transmitters may be set in opposition.

It will thus be seen that by this arrangement the capacity of the transmitting instrument is greatly increased and-may be extended in the same manner to almost any limits desired.

In the modification shown in Fig. 5, the buttons D are mounted in a stationary disk plate A and these buttons are constructed in precisely the same manner as those of F ig. 1 in which a spring pressed stem 15 is adapted to be held in lower positions against stepped notches 15- by means of a cross pin 0. When in their lower position pins 0 are in the plane of arm 13 so as to close a contact therewith for sending the signal of the depressed button in the manner hereinafter described. The magnet J in this instrument is arranged when energized to operate with a rheotomic effect. and therefore the usual break wheel and clock train isomitted. A ratchet wheel is rotatably mounted adjacent sa'id magnet and carries contact arm B. The coiled-spring 3 normally tends to rotate the ratchet wheel 4 in a counter clockwise direction, and the pallets 23" and 23 0211-- ried on pivot armature 23 cooperate with the teeth of ratchet wheel 4 to allow the same to turn in step by-step rotation back to its original position shown in Fig. 5 in which arm B abuts against stop 46 and insulating. block 51 rests beneath contact spring a". The retracting spring 24 normally tends to lift armature 2-3 away from magnet J as soon as the circuit isbroken in the manner presently to be described.

The operation of the transmitter shown in Fig. 5 is as -follows: After the arm B is turned clockwise to wind up the spring 3 and also clear insulating block 51 from bencath brush A so as to close a circuit through the face of the wheel 4, one or more of the buttons D are depressed to give their signals. If the line is then closed at the distant station in the usual manner by the re ceiving operator, (said operator presumably having been notified by any suitable annunciator drop and separate circuit not here shown) current enters at 91 passes through the magnet J, line .32, 52', contact 47, spring contact 48, line 23, and brush A face of wheel 4, grounded to frame and out at 92. As soon as the magnet J is energized and attracts its armature 23 allowing ratchet wheel 4 to rotate one step, the magnet is immed ately deiinergized by the breaking of the circuit at 47. t8, and the retracting spring 24-, throws armature 33 outwardly again to hold ratchet wheel 4 until another lllOYUlTlCIlll. This rheotmnic action continues as long as the current is on thus sending periodical breaks out to line int-he usual. manner. When, however, arm B strikes against a depressed pin 0, a short circuit will be established around the contacts -17. 48 which at this time in the regular operation of the device would be separated. The short circuit is established through line 52, spring l insulated hub of arm 1), through said arm to pin 0. grounded to frame and out at 9'2. When this happens the magnet .i continues to be energized and thus holds its armature down and pallet '23 in locking position adjacent wheel l until the line 91 is broken from some outside OUICQ in the same manner as referred to in regard to Fig. l. The continuation of the current caused by this action, instead of the usual interruption. may be translated into a signal at the distant station.

Fig. 6 shows a still further modification of my transmitter which comprises an outer stationary dial or cover plate J B with spring pressed buttons D extending therethrough. The stems 175 of the buttons D are guided as shown in Fig. 9 by cover J B and socket 4&4. Fixed to each stem is a collar 40 and a spring pressed detent 41 for a purpose hereinafter described. Mounted below the cover plate JB are two superposed disks 33 and 33 fixed together by posts 49, 50 and cross-bar 39. These superposed plates 33 and 33* are arranged so as to be swung slightly on their centers, and the upper plate 33 is provided with recesses 33 adapted to register with the collars 40 and button stems 175 in one position so as to allow said stems to pass therethrough and to be out of register with said collar 40 in its other position shown in Fig. 9. The lower plate 33 has slots -13 not in line with recesses 33 and which slots are adapted to cooperate with the spring detent 41. In order to depress buttons D for setting a sig nal in this device, plates 33 and 33 should be thrown counter clockwise of that shown in Fig. 6 to bring upper recesses 33 in register with collars r0. When the button D is then depressed, its detent ll springs beneath the lower disk 33*and holds down the stem by reason of its being thrown to one side of the stem 175. The spring detent thus holds the button down and when the plates and 33? are swung back to their original position, the upper plate now out of register with collar to, holds it in this depressed position, while the lower slot 43 now in regis ter releases spring detent 41. This position is here shown in section in Fig. 9. This arrangement particularly when used with a lock and key as hereinafter described, prorides for locking the buttons either in their depressed or undepressed position so that after the instrument has been set for a signal, it cannot be tampered with except by an authorized person. I have so far described the setting part of this modification and will now proceed to describe the operating parts thereof: Rotatably mounted on the frame is the ratchet wheel 5 having a retaining pawl 38 and adapted to be actuated step-by-step by hook pawl 37 carried on armature 37 of magnet J. Spring 3? acts to throw back the armature after each attract-ion. The ratchet wheel has fixed thereto arm B which carries at its outer end spring closed contacts 35. The current for energizing magnet J enters at 91, passes through magnet J, branch brush E, insulated hub of arm 13, line H, contacts 35, arm B, grounded to the frame and out at 92. In its original position before being set for a signal, arm B stops at the position shown in 1* ig. (3 with spring pressed contact 35 against insulating block 30 so as to break the circuit at this point. In setting this instrumcnt the operator first oscillates disks 33 and 32* by throwing arm 25 attached to lower disk 33 to the right to bring recesses 33' in register with the button collars 40. The buttons are then depressed for setting the several signals as desired. In this first movement of the plates 33 and 33, pin a5 carried on lower plate 33 and arranged to bear against the tail of armature 3T throws the armature down to hook pawl 37 thereof on a fresh tooth of ratchet wheel 5. The re turn of plate 33 to its original position for locking the buttons in their depressed position allows arn'iatnro 3'? to retract fully under force of spring 37 to move ratchet 5 one step and thus close the circuit at contacts 35. The instrument is now ready for transmitting its signal by closure of the line at the distant station in the usual way as described with reference to the other figures and in my previous patents referred to. In this device however, as shown in Fig. 6, the oscillation of armature 37 is produced by impulses of current which arrive over the line from the distant station. These impulses may be given to the line by a receiving instrument such as is described in my co-pending application Serial No. 93,2863 filed on the same date herewith, in which a resistance is intermittently thrown into the line for weakening the same periodically. The magnet J of transmitter shown in Fig. 6 therefore is adapted to be energized only by the strengthening of the current caused by cutting out the resistance at the distant station. Thus the ratchet wheel is operated step-by-step by the intermittent movement of the magnet armature. The current sent to line by this transmitter is however not broken up into impulses by a break wheel or analogous device as is the case with the other modifications herein described. When arm B arrives opposite a depressed but-ton D, collar 4-0 of said button is in a plane to engage the spring and break the contact at this point, thus stopping the current altogether. The break in the line thus caused,

is translated into a signal by any suitable receiving device, for instance that shown in the co-pending application above referred to.

In order to prevent the present apparatus from being tampered with by unauthorized persons, I have provided a special key for unlocking the same. This key is shown more clearly in Figs. 6 and 8 and consists of a crescent-shaped end 31 adapted to engage the lower port-ion of arm and when turned swing said arm to the right. A properly constructed key-hole may be made for receiving this form of key, and said key also may be provided with an extension 31 adapted to cooperate with any suitable locking device so that only the properly fitted key may be used. In order to identify the operator at this transmitting station, the key is arranged to make a record upon a properly fed record tape such as 28. In the device shown, tape :28 is led from supply roll 27 around feed roller 29 and over roller 30. A hook pawl IGcarried on arm engages ratchet teeth of said feed roller 29 to hook the same forward one step upon every oscillation of arm 25, thus feeding forward a fresh surface to be printed upon. The end 26* of the crescent-shaped key may be provided with a suitable impression device for printing upon the tape 28 when said key is turned to the right.

lVhat I claim isz- 1. An electrical signaling apparatus comprising a signal device having a plurality of movable members for setting latent signals and operating means for receiving the signal indicated, and for restoring each movable member only after. its respective signal has been taken.

2. In apparatus of the class described, in combination, a transmitting instrument, a plurality of receiving instruments, means for setting up different latent signals on said transmitting instrument, means for forming circuits to transmit said latent signals to said receiving instruments respectively in succession, and means for automatically arresting the transmitting operation after the transmission of each latent signal.

3. In apparatus of the class described, in combination, a transmitting instrument, a plurality of receiving instruments, means for setting up different latent signals on said transmitting instrument, means for forming circuits to transmit said latent signals to said receivinginstruments respectively in succession, said transmitting instrument comprising an impulse creating device for breaking the current up into impulses, and means for automatically shortcircuiting said impulse-creating device af ter each signal has been transmitted.

4. In apparatus of the class described, in combination, a transmitting instrument, a plurality of receiving instruments, means for setting up dillerent latent signals on said transmitting instrument, means for forming circuits to transmit said latent signals to said receiving instruments respectively in succession, said transmitting instrument comprising an impulse creating device for breaking the current up into impulses, means for automatically short-circuiting said impulse-creating device after each signal has been transn'iitted, and electrical means for controlling the movement of said impulsecreating device. v

5. In apparatus of the class described, in combination, a transmitting instrument, a plurality of receiving instruments, means for setting up different latent signals on said transmitting instrument, means for forming circuits to transmit said latent signals to said receiving instruments respectively in succession, said transmitting instrument comprising an impulse creating device for breaking the current up into impulses, means for automatically short-circuiting said impulse-creating device after each signal has been transmitted, mechanical means for driving said impulse-creating device and electric means for controlling the operation of said last means.

i. In apparatus of the class describedin combination, a transmitting instrument, a plurality of receiving instruments, contact fingers corresponding to said receiving in strlnnents, circuits connecting said transmitting instrument to said receiving instruments to transmit latent signals to said receiving instruments, a member adapted to be advanced past said fingers and having means coiiperating with said fingers to affeet the circuits and control the signals being transmitted therethrough, said last named means including perforations to re ceive said fingers and form short-circuits, and means operated by the short-circuits for arresting the transmission of the signals.

7. In apparatus of the class described in combination, a transmitting instrument comprising a rotatable wheel, a plurality of receiving instruments, fingers mounted adjacent'to said wheel, said transmitting instrument including means for transmitting impulses to saidreceiving instruments, a tape adapted to be advanced by said Wheel and having perforations cooperating with said fingers to short-circuit said impulse creating means to arrest the transmission of the signal.

8. In apparatus of the class described in combination, a transmitting instrument comprisinga rotatable Wheel, a plurality of receiving instruments, fiugers'mounted adi jacent to said wheel, said transmitting instrument including means for t'ansmitting impulses to said receiving instrinnents. a tape adapted to be advanced by said wheel and having perforations cooperating with KU PU 2 Du 1nd fingers t0 shortcircuit said impulse automatb 1...111:-;s1m1 01 the mi L 0 LL S N I d 1 .P. T i LIL n 1 C 1 S 0.: 1 1. .1 M 1 n S r .L L. r. n a M :11 71 11 P. 

